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'Limitless' energy: how floating solar panels near the equator could power future population hotspots
(theconversation.com)
This is a most excellent place for technology news and articles.
Most of the sea in those region is pretty barren with mud/sand sea floor. As long as they don't put it above a coral reef I imagine the ecological impact would be small. Might even have a positive impact because it might provide shelter for young fish in an otherwise barren patch of sea.